单项选择题
A. Line tester
B. Multimeter
C. Null modem cable
D. Loopback plugs
单项选择题 Which of the following locations would hold 32-bit application files in Windows Vista 64-bit?（）
单项选择题 Which of the following commands can be used to repair a corrupted boot record?（）
单项选择题 Which of the following is MOST likely causing a client’s computer to have an IP address of169.254.0.10?（）